Milk-testing bottle.



l. H. KENQALL. MILK TESTING BOTTLE. APPLxcATloN yman rzs.9.191e.

Patented! Api'. 3, 1917.

A im

l To all whom t may concern:

end thereof forme new wenn.

- t -rasa et nerr.

Be it known that l, lne. l-l. nem., a citizen of the United States,residing at Potsdam, in the county of St. Lawrence and State of NewYork, have invented certain new and useful Improvements in Milk-Telst- Aing Bottles; and` l do hereby declare the following to be a full, clear,and enactv description of' the invention, such as will enable othersskilled in the art to which it appertains to make and use the same. y

This invention relates to milk' testing bottles and more particularly tothat type used in testing whole milk cream or other dairy productscontaining butter fat to ascertain the percentage thereof.

lt has for an object to provide an improved form of construction whichermits all parts thereof bein easily cleaned).

A further object o this invention is the provision of a testing bottlehaving separate lling and reading tubes and having the filling tube sodisposed as to permit pressure exerted thereinto Hatten the lowermeniscus of a column of butter fat in the reading tube.

A further object of'y this invention is the provision of a lillin tubehavingx the' lower to expose t e .passage therethrough perpendicularlyto the major portion of the filling tube to provide against the entranceof butter fats and the like into said tube, as the level 'of thecontents of the bottle is varied by they admission of a liquid throughthe filling tube.

A further object of this invention is the provision of a reading tubehaving two portions of different internal'diameters of which the portionof larger diameter receives the' Fig. 2 is a horizontal sectional viewasonv the line 2-2 of Fig. 1, and

llig.l 3 is a similar view as on the line 3 3 of lig. 1.

peclcation of Letter-statut.

Patented dpr. E, tdt t.

application nieu neem@ e; isle. eeuu ne. 'rasta ,This testing bottle isintended for'use in connection with a centrifuge and is intended fordeterminin the percentage of butter fat in a sample o a predeterminedvolume in which the butter fat isseparatedfrom'the Y liquid by usel ofan acid commonly@ used in such tests.

Referring to the drawings, 10 indicates va /bottle having a darin neck1l in which the lower end of the rea ing tube 12 is carried. rlPhereading tube 12 is formed in portions of different diameters to formbores 1.3 and 14 of did'erent capacities. 'lhetube 1s graduated inopposite directions from a predeterminedpomt 15 which indicates zero andthis point occurs at the 'unction of the two portions of the tube odiderent internal diameters. To one side of this point along thatportion of the tube 'having the larger diameter, the graduationsindicate multiples of a given unit, and tothe opposite side of `the zeropoint, that portion of the tube having the smaller diameter the`graduations indicate fractions of the unit indicated by thefrraduations on the larger portion of the tube. in each instance, thegraduations will be such.A as to equal fractions or multiples of percents. of the volume of sample to be tested.

rlhe bottle 10 is also provided with a lilling tube 16 which has aflaring upper end 17 and-this tube passes through the wall of the bottlewhere itis attached as at 18. rllhe lowed en d of thetube 16 is bent atright angles within its diameter to cause the passage to the majorportion'of the tube or the same result may be accomplished by bending or925. i

forming one side of the lower end of the tube to deect the duide passingthrough` 'angles as said tube at substantially'right shown ait-20.

Thepreading tube -l2 may be detachably carried by the .neck 11, and. itis; apparent that in making the tube detachable from the bottle, accessto the interior of the bottle and the tube lfor cleaning purposes ishadmore freely. V.In making a test, a predetermined volume of the liquidto be tested is placed in the bottle 10 either through the neck 1l orfilling tube 16,-and then a predetermined quantity of acid is alsoadmitted for the usual treatment of the liquid. 'lhe bottle is /thenplaced in the centrifuge in the-ordinary or opening 19 to be disposedperpendicularly manner to subject the liquid being tested to am.@gesamter-afm mythe water or the like admission of.l e h the fillingtube' 16, at which time the butterv fat is'vcollected in the rea tube12. As the' butterA fat rises, duel to e admission of water'v or otherliquids, any portion of the butter fats 'is prevented from entering thefilling tube 16 by\the particular y after a small'portionof said columnhas been forced into the restricted bore, -indicating a vfraction of aunit. Aslight pressure as` by A arrangement of the lower end of thisfilling tube, as wellas by the ingress of water from this lillil'xgtube; p Suiiicient water is admiti ted to the bottle 10 through the tube16 to raise the column of butter fat into the tube 12, so :that thebottom meniscus of said columnwill occur in the portion of the readingtube where the graduations indicate integersA thenger of the personmaking the tefst, Von

l the Haring neck 17 will likewise exert a corresponding pressure on thebottomof the column of butter fat and will vcause the bot-' tom meniscusof saidk 'column to Hatten and thus the' bottom meniscus can bepractically eliminated. The upper memscus occurs in that portion of thevtube having the reduced bore, and in that portion of the tube graduatedto indicate fractions of the' integer indicated upon the column in thelargerbore so itis therefore apparent that by iiattening the lowermeniscus and restricting the upper meniscus to a fractional portion 'ofa unit 1ndicated in thebulk of the column, a more perfect reading ishad. `In making the tubes 12 and 16 straight and in having the tube 12removably carried by the bottle, it is apparent 4that all after-them.

to indicate integers, the other portion of said parts of theibottl'edmaybeeasilycleaned 4o The reading tube 1 2 may Ahaveseveral por- -,tions ofdiierent diameters if desirable.-

The drawings are submitted for illustra-4 tive purposes only and theyare not intended to tliis'application to the specific 45 type shown asmodifications may be made without departing from`the spiritof this in-1'. 'In' a testing bottle, a reading tubehaving portions thereof ofdifferent diameters and graduated in opposite directions from the pointof junction l ofsaid portions of diftube being graduated to indicatefractions of the integer, and a separate filling tube, permittingexertion of a pressure within said reading tube. v

In testimony whereof I aix my signature 'I0 in presence of twowitnesses.

IRA HUNT KENDALL.

Witnesses:

, 0. P. BENSON,

WILLIAM-H. McConmcx.

